The police picked me up when someone whose jewellery and car were stolen pointed at me

At first they just spoke to me for a bit then they said i could be on my way, but when i didn't walk in the direction I said I was going, they picked me up again, checked my shoes for grass (actual grass, not marijuana) and took me to the police station.

I thought maybe my shyness was a factor, I didn't explain myself well enough at the scene.